<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
      <!-- 搜索与添加 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" clearable
           v-model="queryInfo.query" @clear="getUserList">
            <el-button slot="append" icon="el-icon-search"
            @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)" size="mini"></el-button>
            <el-button type="danger" icon="el-icon-delete" @click="deleteUser(scope.row.id)" size="mini"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting"
               @click="setRole(scope.row)" size="mini"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%" @close="addDialogClosed">

      <!-- 内容主体区 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>

      </el-form>

      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%" >

      <!-- 内容主体区 -->
      <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="100px" >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="editForm.username" :disabled="true"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>

      </el-form>

      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前用户：{{userInfo.username}}</p>
        <p>当前角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <template>
          <el-select v-model="selectedRowId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </template>
        </p>
      </div>

      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱规则
    var checkEmail = (roul, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (roul, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的手机号码'))
    }
    return {
      // 获取用户列表的对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制添加对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的保存数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [{
          required: true,
          message: '请输入用户名',
          trigger: 'blur'
        }, {
          min: 3,
          max: 10,
          message: '用户名的长度在 3 到 10 个字符',
          trigger: 'blur'
        }],
        password: [{
          required: true,
          message: '请输入密码',
          trigger: 'blur'
        }, {
          min: 6,
          max: 15,
          message: '密码的长度在 6 到 15 个字符',
          trigger: 'blur'
        }],
        email: [{
          required: true,
          message: '请输入邮箱',
          trigger: 'blur'
        }, {
          validator: checkEmail,
          trigger: 'blur'
        }],
        mobile: [{
          required: true,
          message: '请输入电话',
          trigger: 'blur'
        }, {
          validator: checkMobile,
          trigger: 'blur'
        }]
      },
      // 控制添加对话框的显示与隐藏
      editDialogVisible: false,
      // 编辑用户的保存数据
      editForm: {
        id: '',
        username: '',
        email: '',
        mobile: ''
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: [],
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色id值
      selectedRowId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },

    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },

    // 监听页码值改变事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },

    // 监听switch状态的改变
    async userStateChanged (userInfo) {
      const { data: res } = await this.$http.put(
          `users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')

      console.log(res)
    },

    // 监听添加用户对话框的关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },

    // 添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败！')
        }

        this.$message.success('添加用户成功！')
        this.addDialogVisible = false
        this.getUserList()
      })
    },

    // 展示编辑用户对话框
    async showEditDialog (id) {
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },

    // 编辑用户信息
    editUser () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        debugger
        const { data: res } = await this.$http.put('users/' + this.editForm.id, this.editForm)
        if (res.meta.status !== 200) {
          console.log(res)
          return this.$message.error('修改用户失败！')
        }

        this.$message.success('修改用户成功！')
        this.editDialogVisible = false
        this.getUserList()
      })
    },

    // 删除用户
    deleteUser (id) {
      if (!id) {
        return this.$message.error('没有获取到用户id!')
      }

      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除失败!')
        }
        this.$message({
          type: 'success',
          message: '删除成功!'
        })
        this.getUserList()
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
    },

    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo

      // 获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败!')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },

    // 保存角色信息
    async saveRoleInfo () {
      if (!this.selectedRowId) {
        return this.$message.error('请选中需要分配的角色!')
      }

      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`,
        { rid: this.selectedRowId })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败!')
      }
      this.$message.success('更新角色成功!')
      this.getUserList()
      this.setRoleDialogVisible = false
    },

    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed () {
      this.selectedRowId = ''
      this.userInfo = []
    }
  }
}
</script>

<style lang="less" scoped>
</style>
